Application:Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stapk; Treatment agent of waste water; Rubber solidifying agent ;Perfume industry is served as hydrocarbon perfume aldehyde

The hide profession employ to do to molt dose and pliable dose and wearproof dose , The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment.

Sodium metabisulfite 96%-98%

H.S.CODE:28331900CAS NO.:7681-57-4

Item

Chinese standardHG/T2826-2008

Company standard

Top-grade

First grade

Main content(Na2S2O5)

96.5 min

95.0

97.0

Fe %( Fe)

0.005max

0.010

0.002

Water-Insoluble

0.05max

0.05

0.02

Arsenic(As) content

0.0001max

--

0.0001

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